Electric incubator



1.' A. HOWARD, sa. ELECTRIC INCUBAToRg APPLICATION FILED JULY 3, 1920.

' 1,3935531. A Pamnted oen 11,1921.

.UNITED STATES PATENT; OFFICE.

OHN A HOWARD, SR., OF WEST NEW' BRIGHTON, NEW YORK, ASSIGNOR. TO CAH- WABD ENGINEERING CO., INC., A CORPORATION F NEW YORK.

ELECTRIC INCUEATOR.

To all whom it may concern: A

Be it known that I, JOHN A. HoWARp, Sr., a citizen of the United States, 'residing at West New Brighton, S. I., in the county .of

l Richmond and State of New York, have 1nvented new and useful Improvements. in

j Electric Incubators, of which the following is a specification.

This inventionrelatesto incubator-s and 1'0 more particularly to electric means for heatin them and for controlling the heat to be yde ivered to the same,

One of the objects of this invention 1s to rovide electric heating means for incuators.

Another object is to provide automatic means for controlling the amount of current delivered to the heating element.

Other objects will appear from the following descri tion and claims.

v One embodiment of the invention is shown in the accompanying drawings consisting of one sheet in which Figure 1 is a front elevational view of my' 'irnproved device, partsbeing broken away for the sake of elearness.

Fig. '2 is atop plan view of the same. y

Fig. 3 is a' side elevation of a broeder equipped with my improvement.

Like characters of reference refer to like parts throughout the several views.

This invention contemplates the providing of an incubator with an electrically heated Ahot water oil and with automatic safety outlets which permit escape of the air'when it becomes too hot, the escape of air being utilized for the purpose of eiiecting operation of a rheostat to decrease the current de livered to the heating element.

Referring more particularly to the drawn ing, 1 represents the frame worlr of an inculoator provided with the usual egg trays 2, and sandtrays 3, the latter carrying the moisture necessary for the proper incubation 15 of the eggs.

Secured to the under side of the machine is an electric socket 4 provided with an electric lam 5 which is surrounded by a hot water coil 6, outside of which is a'chiinney 7. The water coil is connected at its upper and lower ends to a pipe 8 provided with a water gage 9, and with a mouth 10 for filling the system.

' Mounted upon a sheet of insulation 11 is B5 a standard 12 which is bifurcated and pro- Specication of Letters Patent.`

Patented oct. 11, 1921.

Application illed July 3, 1920. Serial No. $931,845.

vided in its upper ends with bearings for a knife plate 13 secured to the usual rod 14, members 12, 13 and 14. being of conducting materlal. 15 represents a weight which is adjustable on the bar 14 as is usual and is provided with covers 16 which cover the safety ports 17 in the top of'the frame 1. The tip of' the rod 111 operatively `connects with a rheostat shown at 18, said rheostat being in circuit with the lamp 5.

Normally, air passes in at the bottom of `the machine and up through the' chimney 7 where it is heated. The-air is then deflected downwardly on to the eggs and through the sand trays, out of the escape ports 19 'at the bottom, but when the heat becomes too great, covers 16 are raised throwing up the-rod 14. Any well-known thermostatic device may be used for this purpose. This not only permits the escape of the heated air through ports 17, but also operates the rheostatic device to turn down lamp 5. As the air in the machine becomes cooled, the parts 16 and 14 return to normal and thereby close ports 17 and turn on more power through .lamp 5.

In Fig. 3 is shown practically the same heating and regulating 'device as is shown in Figs. 1 and 2 but applied to a brooder. The same principle of operation is involved, and `similar parts are given similar refer ence characters.

lNhile I have described what I deem to be the most desirable embodiment of my invention, it is obvious that many of the details may be varied'without in any way departing from the spirit of my invention and I therefore do not limit myself to the exact detaiis of construction herein set forth nor to anything less than the whole of my invention limited only by the appended claims.

What I claim as new and desire to secure by Letters Patent is y 1. In a device of the class described, the combination of an electrically operated heating element, a water coil heated thereby,' egg trays, and a chimney permitting air toy pass into said device and into contact' first with said water coil and then with said egg trays.

2. In a device of the class described, the

'combination of an electricallyoperated heatcombination of an electrically operated heateiement, a water coil heated thereby, egg trays, a `chimney permitting air to pass into said device and into contact lrst with said Water coil and then ,with said egg trays, and means for regulating the current passing through said heating element.

411,-. In a device of the class described, the combination of an electrically operated heating element, an egg tray, a water system 1 heated by said element for heating air about said egg tray, and means for re ulating the current passing through said eating element.

5. In a device of the class described, Athe combination of an electrically operated heating element, a water coil heated thereby, egg trays, a chimney permitting air to pass into said device and into contact first with said Water coil and then with said" egg trays, and

a rheostat in the circuit with 'said heating element as and for the purpose set forth.

6. In a device of the class described, the combination of an electrically operated heating element, an egg tray, a Water system heated by said element for heating air about said egg tray, and a rheostat in the circuit With said heating element as and for the purpose set forth.

In a device of the class described, the combination of a chamber to be heated, an electrically operated heating element therefor;` and means whereby the electric current for operatin said element may be automatically controiled by the temperature of said chamber.

In testimony whereof I have aixed my signature.

JOHN A, HOWARD, SR. 

